Ticket #27304: 27304.2.patch

src/wp-includes/user.php

@@ -755 +755 @@
                                 elseif ( preg_match('|^https?://|', $search) && ! ( is_multisite() && wp_is_large_network( 'users' ) ) )
                                         $search_columns = array('user_url');
                                 else
-                                        $search_columns = array('user_login', 'user_nicename');
+                                        $search_columns = array('user_login', 'user_url', 'user_email', 'user_nicename', 'display_name');
                         }
 
                         /**